Human Beta-1,4-Galactosyltransferase 1 (b4GALT1) ELISA Kit | b4GALT1 elisa kit
Human Beta-1,4-Galactosyltransferase 1 (b4GALT1) ELISA Kit
To minimize extra influence on the performance, operation procedures and lab conditions, especially room temperature, air humidity, incubator temperature should be strictly controlled. It is also strongly suggested that the whole assay is performed by the same operator from the beginning to the end.
Principle of the Assay: The microplate provided in this kit has been pre-coated with an antibody specific to b4GALT1. Standards or samples are then added to the appropriate microplate wells with a biotin-conjugated antibody specific to b4GALT1. Next, Avidin conjugated to Horseradish Peroxidase (HRP) is added to each microplate well and incubated. After TMB substrate solution is added, only those wells that contain b4GALT1, biotin-conjugated antibody and enzyme-conjugated Avidin will exhibit a change in color. The enzyme-substrate reaction is terminated by the addition of sulphuric acid solution and the color change is measured spectrophotometrically at a wavelength of 450nm +/- 10nm. The concentration of b4GALT1 in the samples is then determined by comparing the O.D. of the samples to the standard curve.
NCBI and Uniprot Product Information
NCBI Description
This gene is one of seven beta-1,4-galactosyltransferase (beta4GalT) genes. They encode type II membrane-bound glycoproteins that appear to have exclusive specificity for the donor substrate UDP-galactose; all transfer galactose in a beta1,4 linkage to similar acceptor sugars: GlcNAc, Glc, and Xyl. Each beta4GalT has a distinct function in the biosynthesis of different glycoconjugates and saccharide structures. As type II membrane proteins, they have an N-terminal hydrophobic signal sequence that directs the protein to the Golgi apparatus and which then remains uncleaved to function as a transmembrane anchor. By sequence similarity, the beta4GalTs form four groups: beta4GalT1 and beta4GalT2, beta4GalT3 and beta4GalT4, beta4GalT5 and beta4GalT6, and beta4GalT7. This gene is unique among the beta4GalT genes because it encodes an enzyme that participates both in glycoconjugate and lactose biosynthesis. For the first activity, the enzyme adds galactose to N-acetylglucosamine residues that are either monosaccharides or the nonreducing ends of glycoprotein carbohydrate chains. The second activity is restricted to lactating mammary tissues where the enzyme forms a heterodimer with alpha-lactalbumin to catalyze UDP-galactose + D-glucose <=> UDP + lactose. The two enzymatic forms result from alternate transcription initiation sites and post-translational processing. Two transcripts, which differ only at the 5' end, with approximate lengths of 4.1 kb and 3.9 kb encode the same protein. The longer transcript encodes the type II membrane-bound, trans-Golgi resident protein involved in glycoconjugate biosynthesis. The shorter transcript encodes a protein which is cleaved to form the soluble lactose synthase. [provided by RefSeq, Jul 2008]
Uniprot Description
B4GALT1: The Golgi complex form catalyzes the production of lactose in the lactating mammary gland and could also be responsible for the synthesis of complex-type N-linked oligosaccharides in many glycoproteins as well as the carbohydrate moieties of glycolipids. Defects in B4GALT1 are the cause of congenital disorder of glycosylation type 2D (CDG2D). CDGs are a family of severe inherited diseases caused by a defect in protein N- glycosylation. They are characterized by under-glycosylated serum proteins. These multisystem disorders present with a wide variety of clinical features, such as disorders of the nervous system development, psychomotor retardation, dysmorphic features, hypotonia, coagulation disorders, and immunodeficiency. The broad spectrum of features reflects the critical role of N-glycoproteins during embryonic development, differentiation, and maintenance of cell functions. Belongs to the glycosyltransferase 7 family. 2 isoforms of the human protein are produced by alternative initiation.
Protein type: EC 2.4.1.22; EC 2.4.1.90; Motility/polarity/chemotaxis; Glycan Metabolism - N-glycan biosynthesis; Glycan Metabolism - glycosphingolipid biosynthesis - lacto and neolacto series; Carbohydrate Metabolism - galactose; EC 2.4.1.38; Cell development/differentiation; Glycan Metabolism - keratan sulfate biosynthesis; Transferase; Membrane protein, integral; Cell adhesion; Cell surface
Chromosomal Location of Human Ortholog: 9p13
Cellular Component: glycocalyx; Golgi apparatus; desmosome; extracellular space; brush border membrane; Golgi trans cisterna; basolateral plasma membrane; integral to membrane; Golgi membrane; membrane; plasma membrane; external side of plasma membrane; filopodium
Molecular Function: beta-N-acetylglucosaminylglycopeptide beta-1,4-galactosyltransferase activity; protein homodimerization activity; N-acetyllactosamine synthase activity; lactose synthase activity; manganese ion binding; cytoskeletal protein binding; beta-tubulin binding; UDP-galactosyltransferase activity; galactosyltransferase activity; alpha-tubulin binding
Biological Process: keratan sulfate metabolic process; extracellular matrix organization and biogenesis; glycosaminoglycan metabolic process; positive regulation of epithelial cell proliferation involved in wound healing; oligosaccharide biosynthetic process; positive regulation of apoptosis involved in mammary gland involution; regulation of acrosome reaction; pathogenesis; lactose biosynthetic process; negative regulation of cell proliferation; mammary gland development; development of secondary sexual characteristics; single fertilization; penetration of zona pellucida; epithelial cell development; cell adhesion; Notch signaling pathway; binding of sperm to zona pellucida; protein amino acid N-linked glycosylation; regulation of cell motility; post-translational protein modification; angiogenesis involved in wound healing; multicellular organism reproduction; cellular protein metabolic process; branching morphogenesis of a tube; keratan sulfate biosynthetic process; carbohydrate metabolic process; galactose metabolic process; protein amino acid N-linked glycosylation via asparagine; leukocyte migration; acute inflammatory response
Disease: Congenital Disorder Of Glycosylation, Type Iid
Research Articles on b4GALT1
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Product Notes
The Human b4GALT1 b4galt1 (Catalog #AAA2024197) is an ELISA Kit and is intended for research purposes only. The product is available for immediate purchase. The AAA2024197 ELISA Kit recognizes Human b4GALT1. It is sometimes possible for the material contained within the vial of "Beta-1,4-Galactosyltransferase 1 (b4GALT1), ELISA Kit" to become dispersed throughout the inside of the vial, particularly around the seal of said vial, during shipment and storage. We always suggest centrifuging these vials to consolidate all of the liquid away from the lid and to the bottom of the vial prior to opening. Please be advised that certain products may require dry ice for shipping and that, if this is the case, an additional dry ice fee may also be required.Precautions
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